Year 5 completed an experiment measuring the volume of water that could fit into a soft drink bottle when it was filled to capacity. When this experiment was conducted last year (September, 2016), the capacity of the bottle was 620mL to allow room for 600mL of fizzy drink and a little bit of space. Today, (September, 2017) Year 5 found that the capacity of the bottle is only 600mL! This means the volume of the soft drink is less than...